Due to the central Asian region is under the influence of "One Belt and One Road" policy, they started to develop the infrastructure construction, will undoubtedly increase the demand for cement. After a multinational investigation contrast, Uzbekistan customer officially signed a cement production line of 1000TPD with CHAENG (Xinxiang Great Wall Machinery) on March 16, 2016.
This cooperation only lasted for less than 10 days from investigation to sign the contract. It’s the technical strength and good reputation in the industry of Great Wall to let customer to make a firm choice. It marks that CHAENG achieves new breakthrough on exploiting central Asia market again.
| Process type | New Dry Process |
|---|---|
| Capacity | 1000 TPD |
| Main equipment | GRMR22.31 (vertical raw mill) & GRMC16.21 (vertical coal mill) GRMK33.31 (vertical cement mill) & φ3.2x50m rotary kiln |
| Feature | Energy Saving, Environmental Protection |
The limestone crushing use single-section hammer crusher that feeding size is 800mm, production capacity is 180 t/h, and grinding by advanced vertical raw mill- GRMR22.31. Scientific material piling and taking technology, to achieve the initial raw material homogenization.
The energy consumption in cement grinding process accounts for more than 60% of the whole production line, therefore, it has great significance in ensuring product quality and reducing energy consumption by using high efficiency and energy saving GRM series vertical roller mill to deal with raw material, coal, clinker.
Raw materials are sent into φ3.2x50m rotary kiln to be calcined after preheating and precalcining in the cyclone preheater. That is conducive to improve the production efficiency of kiln system, shorten rotary kiln length, and reduce the heat consumption of clinker calcining.
Vertical mill grinding system operate in negative pressure, low dust pollution; System equipment layout is compact, low area occupying, low investment in civil construction; Environmental protection in recycling kiln exhaust gas.
It has been the consensus that vertical mill has advantages in the cement production, especially in the clinker grinding stage from the survey. Vertical mill has the feature of low electricity consumption, high production capacity, high cement quality, thus, it is the trend that vertical mill replace the ball mill.
For a better understanding of vertical cement mill, ball mill and roller press in the production practice, Chaeng made a survey and committed the conclusion:
From the comparison, the vertical cement mill has a better performance in energy saving, it saves 17% of the roller press combined ball mill, 29% of roller press pre-grinding and 38% of ball mill technology in electricity consumption.
| Item | Sub-item | Vertical mill | Roller press+Ball mill |
| Technology | Flow chart | simple | complicate |
| suitability for high moisture content raw material | high | low | |
| Suitability of hard material | high | low | |
| Equipment | Flow chart | 5045 | 6959 |
| Power consumption(Kw/t) | 33.63 | 43.49 | |
| Equipment qty | less | more |
When compared with traditional roller press plus ball mil technology, the vertical mill has advantages in the respects of simple flow chart, high suitability of high moisture content material, hard material, lower total power consumption and less equipment quantity.
| Item | Sub-item | Vertical roller mill | Roller press+Ball mill |
| Production Management | Metal consumption(g/t) | 7 | 35 |
| Maintenance | Easy | Difficult | |
| Output size adjustment | 20~30min | Over 60min | |
| Civil construction | Land area | Less | More |
| Construction period | 180/170 | 230/120 | |
| Environment | Noisy | Low | High |
| Item | Cement grade | 28 days compressive strength | Concrete Grade | Concrete test ratio (kg) | Ratio | Slum | Strength MPa | ||||
| Water | Cement | Sand | Pebble | JF-9 Supper-plasticizer | |||||||
| Vertical mill | P.O 42.5R | 54.9 | C30 | 155 | 287 | 685 | 1271 | 2.30 | 0.540 | 45 | 39.6 |
| C35 | 150 | 341 | 629 | 1277 | 2.73 | 0.440 | 40 | 47.1 | |||
| C40 | 150 | 375 | 562 | 1310 | 3.00 | 0.440 | 48 | 50.9 | |||
| Ball mill | P.O 42.5R | 54.9 | C30 | 165 | 284 | 682 | 1267 | 2.27 | 0.580 | 46 | 39.4 |
| C35 | 160 | 340 | 626 | 1271 | 2.72 | 0.470 | 45 | 46.2 | |||
| C40 | 155 | 369 | 562 | 1311 | 2.95 | 0.420 | 42 | 51.1 | |||
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Supply EPC-turnkey service
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Grinding equipment & spare parts
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High production capacity and high automatic level cement plant
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Grinding equipment & spare parts
As a professional supplier of cement equipment, CHAENG (Great Wall Machinery) provides general contracting of new dry process cement production line including engineering design, equipment manufacturing, installation & commissioning, operation training and finally achieves the designing capacity and production standard. Our company can provide the service from the proposal designing till the plant running to meet your integrated purchase requirement.
Chaeng can provide the raw material mill, clinker mill, rotary kiln ball mill etc together with the spare parts as per the clients’ request, many equipment of Chaeng are patterned with reliable quality, high intelligent and environmental friendly, thus widely used in cement plants.
What we want to mention s, Chaeng owns its spare parts processing base for big items, we can provide any spare parts for the equipment, the control panel, lubricating station to avoid troubles for clients while need the purchase the spare parts, we want to achieve our goal of “ Chaeng, makes your production trouble-free”
Chaeng adopts the highly advanced DOC control system to improve the automatic level and the unit’s quality to guarantee the high quality cement production
The NSP technology adopted reduces 20-30% of the electricity consumption to reduce the production cost and gain the comprehensive benefit for the enterprise.
Xinxiang Great Wall Machinery Corporation, located at National Sustainable Development Experiment Area, Xinxiang City, Henan Province, China, was initially built in 1958 and restructured into limited liability Company from township collective enterprise in 2002.
Covering an area of 330,000 m² and having more than 1,100 employees, the company has a total asset of CNY 500 million and has passed ISO9001:2008 quality management system authentication and is a main specialized supplier for manufacturing large scale kiln mill. Possessing the experience of equipment manufacturing for more than half a century, the Company has formed the perfect operation and management system in design and development, product manufacturing, market promotion, equipment installation and after sales service.
Since the first ball mill produced in 1968, the company has produced more than 2600 sets of mills and rotary kilns in various specifications, and the products are sold to each provinces of China, and exported to America, Russia, Japan, Brazil, India, South Korea, Vietnam, Kenya, Iran and others, enjoys high market reputation.
